MW2 Pros

• Spec Ops mode w/ some co-op options
• Better graphics than Black Ops
• Callsigns and emblems (many people are still playing MW2 to unlock these callsigns and emblems, Black Ops only uses custom callsigns and doesn't have all the cool unlocks that MW2 does)
• Tons of MP game modes, weapons, and perks

MW2 Cons

• Tactical insertion in free-for-all (lead to too much boosting)
• One man army pro (a good perk until people used it for noob-tubing)
• killstreaks stacking on killstreaks (people just sit in their camping location until their harriers get the kills for a chopper-gunner)
• danger close pro (there is no need to make noob-tubes to be more powerful)
• really confusing discombobulated campaign
• Tactical nukes

Black Ops Pros

• Wager modes
• Splitscreen online MP mode (1st CoD game to have this?)
• Nazi Zombies
• Dead Ops mode
• Bots
• More balanced gameplay

Black Ops Cons

• Worse killstreak options than MW2
• not as many perks as MW2
• custom callsigns/emblems were a complete mess of immaturity/homophobia/racial slurs. 
• not as much as incentive to keep playing the MP as MW2 since specialized callsigns/killstreak emblems were not awarded
• Getting the pro-perks took way to long for some of the perks.  This discouraged me from finishing more than 1 prestige.
• Too many of the cool options such as gold guns were based on prestige level and not skill
• Wager modes were too separated from the rest of the multiplayer.  Some of these modes were the most fun in the game, but it would be nice to be able to get experience from playing them instead of points
• The points system seemed kind of redundant after a while
• Graphics not as good as MW2
• Sniping options weren't nearly as fun as MW2
• It was often too difficult to get a party to matchmake in MP

Overall impression

Overall, I liked MW2 much better.  I sold my copy of black ops 3 months after buying the game.  I still play MW2 to this day.  Black Ops made some good improvements but I loathed that they took out all of the callsigns/emblems.  I also didn't like the snipers that much in black ops.  I didn't like the points system that much in black ops and I didn't like the fact that they didn't give me much incentive to keep playing the game.

Thanks that's really neat but what system did you play Black Ops on? I found the matchmaking better on Black Ops than Modern Warfare 2.

That doesn't even make a tiny bit of sense....was it shortly after PSN came back up?

Makes perfect sense if you consider where he lives and what time of the day he said.  More Euorpeans on at that time would drive the ps3 users higher.   Ask him to take the numbers at 9-11pm and more 360 users would be playing.

Oh yeah ok I guess I didn't think of that.

black ops is easily better

I just checked and it's PS3. Although there are more american users at around that time

MW2 is more fun than Black Ops, but Black Ops is more balanced than MW2. That being said, BO has a few things in it that are completely over-powered compared to others. For example, the perk Ghost Pro and the weapons Famas and AK74u. In MW2, all of the weapons are freaking overpowered so they balance themselves out, and the perk balance is better, though the One Man Army+Danger Close+Grenade launcher combo is game breaking. The killstreaks in MW2 are more fun than BO, and there is more variety in classes in MW2 than BO. The connection is also better in MW2, but BO has theater mode which adds a nice touch.

Personally, I would pick MW2 because you will have more fun on it than BO, and because MW3 will be similar to MW2 and MUCH different than BO.

i recently did world at war on veteran...and i never wana play another call of duty EVER

This post has me really excited. I will most likely getting both cause like I have said before, they both look really good and it's hard for me to choose. I am reading everyone post to see what you say.